FLUS43 KLOT 141729
HWOLOT
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1229 PM CDT Sat Oct 14 2017
Winnebago-Boone-McHenry-Lake Illinois-Ogle-Lee-De Kalb-Kane-
DuPage-Cook-La Salle-Kendall-Grundy-Will-Kankakee-Livingston-
Iroquois-Ford-Lake Indiana-Porter-Newton-Jasper-Benton-
1229 PM CDT Sat Oct 14 2017 /129 PM EDT Sat Oct 14 2017/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
.DAY ONE...This Afternoon and Tonight.
WEATHER HAZARDS EXPECTED:
Significant Thunderstorm Risk...with an associated:
Limited Tornado Risk.
Elevated Hail Risk...up to nickel to quarter size.
Elevated Thunderstorm Wind Damage Risk...up to 70 MPH.
Significant Flooding Risk.
Limited Non Thunderstorm Wind Risk.
In addition, flooding is expected along portions of the Des Plaines,
Du Page, and Fox Rivers.
DISCUSSION:
Additional waves of showers and thunderstorms are expected to move
across northern Illinois into tonight. Any severe threat with the
storms during much of the afternoon hours is expected to be
limited to isolated gusty to damaging winds, but will produce
heavy rainfall and possible flash flooding as they move over the
same areas.
A strong cold front will then shift across the area tonight,
resulting in the likelihood for an eastward moving line of strong
to severe thunderstorms. The main threat from these storms this
evening into tonight will be damaging wind gusts. However, there
will also be a nonzero isolated tornado risk across parts of
north central Illinois. Very heavy rainfall will also continue to
be a hazard with these storms, and this could result in rapid
rises, and possible flooding on area streams and rivers.
.DAYS TWO THROUGH SEVEN...Sunday through Friday.
Sunday...
Limited Non Thunderstorm Wind Risk.
Elevated Frost Risk Sunday night.
Monday...
Elevated Frost Risk in the AM.
In addition, flooding is expected to continue along portions of the
Des Plaines, Du Page, and Fox Rivers.
.SPOTTER INFORMATION STATEMENT...
Spotters will likely be needed late this afternoon and this
evening..
GENERAL STORM MOTION OF THE DAY:
Moving east northeast at 50 MPH.
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